What is the difference between a terrestrial planet and a gas giant?
A terrestrial planet is a planet that is similar to Earth in terms of size and mass. They are made up of rock and metal, and they have a solid surface. A gas giant, on the other hand, is a planet that is made up mostly of gases, like hydrogen and helium Gas giants, on the other hand, are much larger and have a much lower density. The main difference between these two types of planets is their composition. Terrestrial planets are made up of rock and metal, while gas giants are made up of gas.